Hey please help also please explain how you get the answer

When turned about its axis of rotation, which shape could have created this three-dimensional object?

16. you're planning to buy a boat, a motor, and some miscellaneous boating equipment. the boat costs $325, the motor costs $225, and the equipment costs $79. if you've saved $438 toward these purchases, how much more do you need to save? a. $181 b. $281 c. $291 d. $191

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?